Shaper-head.



T. W. ELDER.

SHAPER HEAD.

APPLICATION FILED APR. 19. 1915.

Patented July 4, 1916.

WITNESSES: INVENTOR MWW w flw fy/ww ATTORNEY UNITED STATES PATENT OFFICE. i

THOMAS WILLIAM ELDER, OF FORT WAYNE, INDIANA, ASSIGNOR TO VAN ARNAM MFG. CO., A CORPORATION OF INDIANA.

SHAPER-HEAD.

Specification of Letters Patent.

Patented July 4, 1916.

Application filed April 19, 1916. Serial No. 92,230.

ber of bits are secured in connection witha revolving spindle with their respective cutting edges arranged equi-distant from the axis upon which the spindle revolves,

' and the object of the improvement is to provide a construction for securing several pairs of bits in a common plane so that a greater number of cutting edges may be utilized in carrying out the operation of the shaper-head upon the stock.

The object of the improvement is accomplished by the construction illustrated in the accompanying drawings in which:

Figure 1 is a plan view of the device ineluding a complete set of bits secured therein; Fig.2is a bottom plan view of the intermediate block and cap associated together; Fig. 3 is a plan view of the base-plate; and Fig. 1 is a vertical section of the shapergo head, the spindle and securing nuts being shown in full.

Similar characters of reference indicate corresponding parts throughout the several views and referring now to the same: 1 is a rotatable spindle having a shoulder (2) thereon, and which has a threaded extension (3) beyond the shoulder.

4: is a base-plate circular in form and having a central opening (5) through which the extension (3) of the spindle extends, the lower face of the plate being so formed about the opening as to fit snugly upon the shoulder (2). In the upper face of the plate are made parallel grooves (6) one upon each side of the spindle opening, and also a second pair of parallelgrooves, one upon each side of the opening and extending at right angles to the former grooves.

An intermediate block (8) having recesses (9) made in its sides is mounted upon the extension of the spindle, the latter extending through the central opening (10) made in the former. In the bottom face of the intermediate block are made a pair of grooves (11) one upon each side of its central opening and extending at right angles to its recesses. A cap (12) is formed.- with a recess (13) in its under side and with pendant lugs (14) and (15) respectively, oppositely disposed and having in their lower faces corresponding grooves (16) and (17) in parallel relation with each other. The pendant lugs are adapted to fit movably within the corresponding recesses in the intermediate block, the lengthof the lugs being slightly greater than the thickness of the block. The recess (13) is of sufficient size as to contain without obstruction the lower nut (18) on the spindle, the former being for the purpose of clamping the intermediate block (8) upon the bits (19) that are set between the block and the base-plate and within the corresponding grooves. A nut (20) on the spindle serves to clamp the cap (12) with its lugs bearing upon the bits (21) that are inserted between the lugs and the base-plate in the corresponding grooves therein.

By means of this construction several pairs of bits are held in fixed relation in a common plane and with their respective cutting edges positioned so as to perform in common the intended operation upon the stock.

A feature of the invention is the means for securing bits in independent pairs in the same plane and with their cutting edges positioned for a common operation.

lVhat I claim is 1. In a device of the class described, a

, revoluble spindle having a shoulder thereon and threaded extension; a base-plate on the extension resting against the shoulder, the upper face of the plate having two pairs of parallel grooves extending at right angles to each other; an intermediate block upon the extension having a pair of grooves made in its lower face; a pair of bits arranged between the base-plate and block, their edges extending into the corresponding grooves therein, said block having also a recess in each side; a nut on the extension for clamping the intermediate block against said bits; a cap having a recess to accomm0date the nut, and also pendant lugs adapted to fit loosely in the recesses in the intermediate block, each lug having. a groove made in its lower face; a second pair of bits arranged between the lugs on the cap and the base-plate with their edges extending in the corresponding grooves;

and a nut on the spindle for clamping the cap upon the latter bits.

2. In a device of the class described, a rotatable spindle; a base-plate thereon having two pairs of parallel grooves in its upper face arranged at right angles to each other; two pairs of bits arranged with their lower edges in the corresponding pairs of grooves and with their cutting edges positioned respectively at points equi-distant from the axial center of the spindle; and means in connection with the spindle for independently clamping each pair of bits in position upon the base-plate.

3. In combination with a rotating spindle, a base-plate mounted thereon; an intermediate block mounted upon the spindle having a recess in each side thereof; a pair Copies of this patent may be obtained for five cents each, by addressing the Commissioner of bits arranged between the base-plate and block in parallel relation with each other, one upon each side of the spindle; means on the spindle for clamping the block upon THOMAS WILLIAM ELDER.

lVitnesses MATILDA METTLER, WVALTER Gr. BURNS.

of Patents,

Washington, D. 0. 

